CN204186598U - A kind of centrifugal pump - Google Patents
A kind of centrifugal pump Download PDFInfo
- Publication number
- CN204186598U CN204186598U CN201420543420.XU CN201420543420U CN204186598U CN 204186598 U CN204186598 U CN 204186598U CN 201420543420 U CN201420543420 U CN 201420543420U CN 204186598 U CN204186598 U CN 204186598U
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- CN
- China
- Prior art keywords
- pump
- pump housing
- impeller
- unshrouded impeller
- bearing
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Abstract
The utility model discloses a kind of centrifugal pump, comprise the pump housing, pump cover, unshrouded impeller, suspension body, pump shaft, drive unit, unshrouded impeller is arranged in the fluid space of the pump housing and pump cover formation, its side near pump cover is provided with flow channel for liquids, the underpressure chamber be communicated with this flow channel for liquids is provided with near the side of the pump housing, pump cover is provided with suction flange, the pump housing is provided with outlet(discharge) flange, pump shaft by bearings in suspension body, pump shaft one end connects in the middle part of unshrouded impeller through the through hole of the pump housing, the other end connecting drive device, pump shaft outside is provided with axle sleeve, axle sleeve is positioned at the part of pump shaft near unshrouded impeller, axle sleeve outside is provided with mechanical sealing assembly.The centrifugal pump that the utility model proposes, it is energy-efficient, compact structure, reliable performance, can extract the liquid with certain viscosity, and long service life.
Description
Technical field
The utility model relates to pump technical field, particularly relates to a kind of centrifugal pump.
Background technique
Centrifugal pump is according to centrifugal principle design, and the impeller blade carry fluid of High Rotation Speed rotates, and is thrown away by fluid, thus reaches the object of conveying.The field such as current centrifugal pump is widely used in the industry production deslagginves such as mine, metallurgy, electric power, chemical industry, ore discharge, dig sand.Normally used centrifugal pump generally adopts the impeller of open type and enclosed two kinds of structural types, but the stickiness of double shrouded wheel convection cell requires higher, and when the liquid that extraction stickiness is higher, the runner on double shrouded wheel easily blocks.Meanwhile, impeller is the blade of impeller and front shroud, back shroud are made of one during fabrication; Centrifugal pump is when the fluid of conveying solid substance, liquid mixing; after centrifugal pump work a period of time; because washing away with the pressure difference of impeller both sides of fluid is larger; easily cause the blade of impeller by Fast Wearing; affect service behaviour and the working life of centrifugal pump; can impeller failure be made time serious, cause centrifugal pump to shut down.
Usually, people are for improving the wear-resisting property of impeller, often some high-abrasive materials of the impeller of centrifugal pump are manufactured, or at some harder materials of surface inserting of impeller, but because the front and rear cover plate of impeller noted earlier and blade are all the reasons be made of one, then do not have space to inlay for the impeller that some sizes are less at all, therefore, to the impeller that cannot improve separately the wear resistance of blade material, the wear resistance of whole impeller material can only be improved, the manufacture cost of impeller so just must be caused higher; In addition, if the partial blade of impeller weares and teares after centrifugal pump uses a period of time, whole impeller all need be changed during replacing, maintenance cost so also will be caused higher.
Model utility content
For solving in background technique the technical problem existed, the utility model proposes a kind of centrifugal pump, energy-efficient, reliable performance, the liquid with certain viscosity can be extracted, long service life.
A kind of centrifugal pump that the utility model proposes, comprises the pump housing, pump cover, impeller, suspension body, pump shaft, drive unit;
Pump cover is fixed on the pump housing, fluid space is provided with between pump cover and the pump housing, unshrouded impeller is arranged in above-mentioned fluid space, between the radial edges of unshrouded impeller and the pump housing spaced a predetermined distance, the side of the close pump cover of unshrouded impeller is provided with the radial runner extended, unshrouded impeller is provided with the underpressure chamber with flow passage near the side of the pump housing, pump cover is provided with import in the rotor shaft direction of unshrouded impeller, above-mentioned inlet is connected with suction flange, through hole is provided with in the middle part of the pump housing, the pump housing is provided with outlet in the plane in the sense of rotation of unshrouded impeller, above-mentioned outlet port is connected with outlet(discharge) flange, suspension body is connected to the side of the pump housing away from unshrouded impeller, suspension body inside is provided with the through cavities that the rotor shaft direction along unshrouded impeller extends, be provided with successively away from the clutch shaft bearing lid of the pump housing in above-mentioned through cavities, clutch shaft bearing, second bearing and the second bearing cap, pump shaft by clutch shaft bearing and the second bearings in above-mentioned through cavities, one end of pump shaft is connected in the middle part of unshrouded impeller through through hole, the other end connecting drive device, pump shaft outside is provided with axle sleeve, it is between unshrouded impeller and clutch shaft bearing lid, axle sleeve outside is provided with mechanical sealing assembly, mechanical sealing assembly inside is formed with the first seal space, pump shaft, suspension body, the second seal space is formed between clutch shaft bearing lid and the second bearing cap.
Preferably, freezing mixture is provided with in the first seal space.
Preferably, oiling agent is provided with in the second seal space.
Preferably, clutch shaft bearing adopts roller bearing.
Preferably, the second bearing adopts angular contact bearing.
Preferably, axle sleeve part is positioned at through hole, is provided with O RunddichtringO between itself and through hole.
In the utility model, the centrifugal pump proposed, comprise the pump housing, pump cover, unshrouded impeller, suspension body, pump shaft, drive unit, unshrouded impeller is arranged in the fluid space of the pump housing and pump cover formation, its side near pump cover is provided with flow channel for liquids, the underpressure chamber be communicated with this flow channel for liquids is provided with near the side of the pump housing, pump cover is provided with suction flange, the pump housing is provided with outlet(discharge) flange, pump shaft by bearings in suspension body, pump shaft one end connects in the middle part of unshrouded impeller through the through hole of the pump housing, the other end connecting drive device, pump shaft outside is provided with axle sleeve, axle sleeve is positioned at the part of pump shaft near unshrouded impeller, axle sleeve outside is provided with mechanical sealing assembly.By the centrifugal pump of above-mentioned optimal design, it is energy-efficient, compact structure, reliable performance, can extract the liquid with certain viscosity, and long service life.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of centrifugal pump that the utility model proposes.
Embodiment
As shown in Figure 1, Fig. 1 is the structural representation of a kind of centrifugal pump that the utility model proposes.
With reference to Fig. 1, a kind of centrifugal pump that the utility model proposes, comprises the pump housing 1, pump cover 2, unshrouded impeller 3, suspension body 4, pump shaft 5, drive unit;
Pump cover 2 is fixed on the pump housing 1, fluid space is provided with between pump cover 2 and the pump housing 1, unshrouded impeller 3 is arranged in above-mentioned fluid space, between the radial edges of unshrouded impeller 3 and the pump housing 1 spaced a predetermined distance, make to form annularly flow space between unshrouded impeller 3 and the pump housing 1, the side of the close pump cover 2 of unshrouded impeller 3 is provided with the radial runner 31 extended, unshrouded impeller 3 is provided with the underpressure chamber 32 be communicated with runner 31 near the side of the pump housing 1, underpressure chamber 32 ensures that unshrouded impeller 3 pressure at both sides difference reduces, thus reduce unshrouded impeller 3 wearing and tearing in use, increase the service life, pump cover 2 is provided with import in the rotor shaft direction of unshrouded impeller 3, above-mentioned inlet is connected with suction flange 21, through hole is provided with in the middle part of the pump housing 1, the pump housing 1 is provided with outlet in the plane in the sense of rotation of unshrouded impeller 3, above-mentioned outlet port is connected with outlet(discharge) flange 11, suspension body 4 is connected to the side of the pump housing 1 away from unshrouded impeller 3, suspension body 4 inside is provided with the through cavities that the rotor shaft direction along unshrouded impeller 3 extends, be provided with successively away from the clutch shaft bearing lid 41 of the pump housing in above-mentioned through cavities, roller bearing 42, angular contact bearing 43 and the second bearing cap 44, pump shaft 5 is supported in above-mentioned through cavities by roller bearing 42 and angular contact bearing 43, one end of pump shaft 5 is connected in the middle part of unshrouded impeller 3 through through hole 11, the other end connecting drive device, pump shaft 5 outside is provided with axle sleeve 51, it is between unshrouded impeller 3 and clutch shaft bearing lid 41, axle sleeve 51 part is positioned at the through hole of the pump housing 1, axle sleeve 51 outside is provided with mechanical sealing assembly 52, O RunddichtringO is provided with between the through hole of mechanical sealing assembly 52 and the pump housing 1, thus avoid the liquid extracted to flow in the through cavities of suspension body 4, in order to avoid corroded components, mechanical sealing assembly 52 inside is formed with the first seal space, freezing mixture is provided with in first seal space, for reducing the heat produced during wheel rotation, pump shaft 5, suspension body 4, the second seal space is formed between clutch shaft bearing lid 41 and the second bearing cap 44, oiling agent is provided with in second seal space, for extending the working life of roller bearing and angular contact bearing.
Adopt in the process of the centrifugal pump extracting liquid of the present embodiment, first liquid to be extracted is full of in the fluid space between the pump housing and pump cover, start drive unit, drive unit is rotated by pump shaft impeller, impeller produces negative pressure near water inlet, under the effect of negative pressure, liquid to be extracted is drawn in the fluid space between pump cover and the pump housing via suction flange, liquid simultaneously in fluid space is along with the rotation of unshrouded impeller, runner under the influence of centrifugal force along impeller surface flows to the annular space around impeller, thus discharge via outlet(discharge) flange, ensure that Liquid extracting processing efficient is energy-conservation, working stability.
In the present embodiment, the centrifugal pump proposed, comprise the pump housing, pump cover, impeller, suspension body, pump shaft, drive unit, impeller is arranged in the fluid space of the pump housing and pump cover formation, its side near pump cover is provided with flow channel for liquids, the underpressure chamber be communicated with this flow channel for liquids is provided with near the side of the pump housing, pump cover is provided with suction flange, the pump housing is provided with outlet(discharge) flange, pump shaft by bearings in suspension body, pump shaft one end connects in the middle part of impeller through the through hole of the pump housing, the other end connecting drive device, pump shaft outside is provided with axle sleeve, axle sleeve is positioned at the part of pump shaft near impeller, axle sleeve outside is provided with mechanical sealing assembly.By the centrifugal pump of above-mentioned optimal design, it is energy-efficient, compact structure, reliable performance, can extract the liquid with certain viscosity, and long service life.
In a specific embodiment, the stability adopting roller bearing 42 and angular contact bearing 43 to ensure when pump shaft 5 rotates, thus extend the working life of pump shaft 5.
The above; be only the utility model preferably embodiment; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; be equal to according to the technical solution of the utility model and model utility design thereof and replace or change, all should be encompassed within protection domain of the present utility model.
Claims (6)
1. a centrifugal pump, is characterized in that, comprises the pump housing (1), pump cover (2), impeller (3), suspension body (4), pump shaft (5), drive unit;
Pump cover (2) is fixed on the pump housing (1), fluid space is provided with between pump cover (2) and the pump housing (1), unshrouded impeller (3) is arranged in described fluid space, between the radial edges of unshrouded impeller (3) and the pump housing (1) spaced a predetermined distance, unshrouded impeller (3) is provided with the radial runner (31) extended near the side of pump cover (2), unshrouded impeller (3) is provided with near the side of the pump housing (1) underpressure chamber (32) be communicated with runner (31), pump cover (2) is provided with import in the rotor shaft direction of unshrouded impeller (3), described inlet is connected with suction flange (21), the pump housing (1) middle part is provided with through hole, the pump housing (1) is provided with outlet in the plane in the sense of rotation of unshrouded impeller (3), described outlet port is connected with outlet(discharge) flange (11), suspension body (4) is connected to the side of the pump housing (1) away from unshrouded impeller (3), suspension body (4) inside is provided with the through cavities that the rotor shaft direction along unshrouded impeller (3) extends, be provided with successively away from the clutch shaft bearing lid (41) of the pump housing in described through cavities, clutch shaft bearing (42), second bearing (43) and the second bearing cap (44), pump shaft (5) is supported in described through cavities by clutch shaft bearing (42) and the second bearing (43), one end of pump shaft (5) is connected to unshrouded impeller (3) middle part through the through hole of the pump housing (1), the other end connecting drive device, pump shaft (5) outside is provided with axle sleeve (51), between its unshrouded impeller (3) and clutch shaft bearing lid (41), axle sleeve (51) outside is provided with mechanical sealing assembly (52), mechanical sealing assembly (52) inside is formed with the first seal space, pump shaft (5), suspension body (4), the second seal space is formed between clutch shaft bearing lid (41) and the second bearing cap (44).
2. centrifugal pump according to claim 1, is characterized in that, is provided with freezing mixture in described first seal space.
3. centrifugal pump according to claim 1, is characterized in that, is provided with oiling agent in described second seal space.
4. centrifugal pump according to claim 1, is characterized in that, clutch shaft bearing (42) adopts roller bearing.
5. centrifugal pump according to claim 1, is characterized in that, the second bearing (43) adopts angular contact bearing.
6. centrifugal pump according to claim 1, is characterized in that, axle sleeve (51) part is positioned at through hole, is provided with O RunddichtringO between the through hole of mechanical sealing assembly (52) and the pump housing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420543420.XU CN204186598U (en) | 2014-09-19 | 2014-09-19 | A kind of centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420543420.XU CN204186598U (en) | 2014-09-19 | 2014-09-19 | A kind of centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204186598U true CN204186598U (en) | 2015-03-04 |
Family
ID=52618607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420543420.XU Expired - Fee Related CN204186598U (en) | 2014-09-19 | 2014-09-19 | A kind of centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204186598U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314829A (en) * | 2014-09-19 | 2015-01-28 | 安徽金龙机械有限公司 | Centrifugal pump |
| CN106939896A (en) * | 2017-05-04 | 2017-07-11 | 项光辉 | A kind of digital metering non-return centrifugal pump of high leakproofness |
-
2014
- 2014-09-19 CN CN201420543420.XU patent/CN204186598U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314829A (en) * | 2014-09-19 | 2015-01-28 | 安徽金龙机械有限公司 | Centrifugal pump |
| CN106939896A (en) * | 2017-05-04 | 2017-07-11 | 项光辉 | A kind of digital metering non-return centrifugal pump of high leakproofness |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150304 Termination date: 20190919 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |